What Is The Difference Between Titration And Back Titration?

Which titration is more accurate?

Standardization is a procedure which normalizes the titration system and provides the most accurate titrant concentration.

This value is critical in the final calculation for the analyte content.

If the concentration is not known precisely, it can throw off a result..

Why is aspirin used?

Aspirin has been shown to be helpful when used daily to lower the risk of heart attack, clot-related strokes and other blood flow problems in patients who have cardiovascular disease or who have already had a heart attack or stroke. Many medical professionals prescribe aspirin for these uses.

Why is back titration method used to determine the amount of CaCO3 in toothpaste instead of a direct titration?

Instead of using standard titration methods where an acid is titrated directly using a standard solution of a base, back titration is used because the sample to be analysed, CaCO3 does not dissolve in water.

What is back titration example?

Back titration is also titration. It is called back titration because it is not carried out with the solution whose concentration is required to be known (analyte) as in the case of normal or forward titration, but with the excess volume of reactant which has been left over after completing reaction with the analyte.

Why is back titration is better than direct titration?

The main difference between back titration and direct titration is that a back titration determines the concentration of the unknown by determining the remaining amount of the compound with a known concentration whereas a direct titration directly measures the concentration of the unknown compound.

What is Volhard titration and its uses?

: a method for the determination of chlorine, bromine, and iodine in the form of halides by precipitating them with excess silver nitrate and titrating the excess with a thiocyanate solution.

What is the significance of boiling the solution of aspirin before titration?

In boiling the solution, aspirin is hydrolyzed into salicylic acid ad acetic acid. This liberated acids reacts with sodium hydroxide to form sodium salts.

What is back titration and blank titration?

Knowledge of the volumes of titrant added, the reaction stoichiometry, and the amount of titrand allows us to measure the molar quantity of the titrand. A blank titration occurs when the titrant is added to NO titrand…and this allows us to measure the dead volume of titrant, before the endpoint signals equivalence….

What is a back titration used for?

Back titration is used in the analysis of compounds that are insoluble in water but soluble in acid. (There are other applications as well.) An excess of acid is added to the solid and the remaining acid is titrated against a standard solution of alkali.

Why is back titration used in aspirin?

Using titration it would be difficult to identify the end point because aspirin is a weak acid and reactions may proceed slowly. Using back titration the end-point is more easily recognised in this reaction, as it is a reaction between a strong base and a strong acid.

Is aspirin acidic or basic?

Aspirin itself is an acidic medicine and causes gastric irritation and regurgitation which can lead to low oral pH levels [7].

What is a back titration?

A technique in volumetric analysis in which a known excess amount of a reagent is added to the solution to be estimated. The unreacted amount of the added reagent is then determined by titration, allowing the amount of substance in the original test solution to be calculated.

How do you solve back titration problems?

5 Simple Steps in Back Titration Calculations:Determine the amount of C required in the titration.Using stoichiometry, find the amount of A that reacted with C in the titration.Note that amount of A that reacted with C in the titration = amount of A that did not react with B in the earlier reaction.More items…•24 Apr 2019

What is a back titration with antacid?

Antacids are bases that react stoichiometrically with acid. The number of moles of acid that can be neutralized by a single tablet of a commercial antacid will be determined by back titration. … The solution will be titrated with base of known concentration to determine the amount of acid not neutralized by the tablet.